His performances for the Swans prompted Tottenham to hand him a two-year deal in the summer of 2017, with Llorente going on to score 13 goals in 66 appearances for Mauricio Pochettino’s side before his release this summer.

Napoli, runners-up in Serie A last season, have spent in excess of £100 million ($121m) on new players as they attempt to overhaul Juventus.

Hirving Lozano is their most expensive signing, costing €42 million (£38.5m/$47m) from PSV Eindhoven.